Oh neat! I had no idea. I already soldered up a USB cable by hand so I can easily hit those pins. I&#39;ll see if my device has /dev/ttySAC2. I left it at home today though. :-/<div><br></div><div>Unfortunately that&#39;s only a partial solution. Our plan was to use a USB hub to connect both an FTDI and a flash drive (the tab works just fine with a hub).</div>
<div><br></div><div>With the above trick, the Accessory ID line gets a 150k resistor across it, but it needs 20k to go into USB mode, so they can&#39;t both be used at once it would seem.</div><div><br></div><div>I&#39;ll try it though. The guy seemed to be unclear on if the 150k resistor was necessary. With any luck USB and serial can be used simultaneously.</div>
<div><br></div><div>Thanks.</div><div><br></div><div>-Taylor<br><br><div class="gmail_quote">On Tue, Aug 30, 2011 at 11:56 AM, David Rorex <span dir="ltr">&lt;<a href="mailto:drorex@gmail.com">drorex@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">You might also investigate existing serial ports on the device, I have no experience with the galaxy tab, but a quick google came up with this page saying there&#39;s already a serial port, and you just need some tricky soldering skills to access it:<div>

<a href="http://forum.xda-developers.com/showthread.php?t=1010314" target="_blank">http://forum.xda-developers.com/showthread.php?t=1010314</a></div><div><br></div><div>This way you wouldn&#39;t need to worry about any extra drivers, according to the post it shows up as /dev/ttySAC2<br>

<p>Hey,<br>
Yeah I&#39;ve used Bluetooth before but this will be all integrated into a special case on the tablet (the FTDI is actually for hooking up an Xbee module, as all we&#39;re trying to do is use the tablet to talk to some remote Xbee sensors).</p>

<p>We will use Bluetooth if we have to, but apparently the tablet supports FTDI devices somewhat readily (with the instructions given on that site), I&#39;m just missing... something. So I&#39;d like to get that working if possible.</p>

<p>Additionally, this is a custom product that will be sold with the tablet, so other device support isn&#39;t a concern.</p>
<p>Really it&#39;s just that hosting is the right solution, and I had a tutorial, so not doing it would be annoying.</p><div><div></div><div>
<div class="gmail_quote">On Aug 27, 2011 3:30 PM, &quot;Jake&quot; &lt;<a href="mailto:jake@spaz.org" target="_blank">jake@spaz.org</a>&gt; wrote:<br type="attribution">&gt; Is there a particular reason why it has to be wired to an FTDI device? I <br>

&gt; assume you&#39;re looking for serial communications, and apparently it&#39;s a lot <br>&gt; easier to deal with bluetooth serial interfaces from android than trying <br>&gt; to recognize a hardware USB serial port plugged into the phone.<br>

&gt; <br>&gt; bluetooth serial modules are only $5 !!!! Robby has been using one in his <br>&gt; phone-controlled RC car, and i&#39;m using one on a radiation detector. You <br>&gt; just solder up a couple resistors and an LED to it, and give it 3.3 volts.<br>

&gt; <br>&gt; Another nice thing is that you can do this even with phones that are not <br>&gt; rooted or jailbroken, and have no actual USB host capabilities, like the <br>&gt; G1 (which are available very cheaply these days)<br>

&gt; <br>&gt; -jake<br>&gt; <br>&gt; Taylor said:<br>&gt; <br>&gt; I saw the other thread about serial ports and linux and realized I should<br>&gt; ask my question here too (I am under the impression this is an appropriate<br>

&gt; use of the mailing list?)<br>&gt; <br>&gt; I have been messing with getting my Samsung Galaxy Tab 10.1 Android<br>&gt; Honeycomb tablet to talk to FTDI devices. It is apparently capable but<br>&gt; requires compiling and loading some kernel modules.<br>

&gt; <br>&gt; I followed a tutorial on building the kernel modules, got them loaded up,<br>&gt; and lsmod shows the module is running, but I still get &quot;unknown USB <br>&gt; device&quot;<br>&gt; when I plug it in, I don&#39;t get a ttyUSB0 device, and dmesg shows the <br>

&gt; correct<br>&gt; VID and PID but claims it is not supported.<br>&gt; <br>&gt; The tutorial I followed is above my comments here:<br>&gt; <a href="http://android.serverbox.ch/?p=285&amp;cpage=1#comment-468" target="_blank">http://android.serverbox.ch/?p=285&amp;cpage=1#comment-468</a><br>

&gt; <br>&gt; And I started a thread on XDA but haven&#39;t gotten any responses yet.<br>&gt; <br>&gt; Since we all might be interested in Android devices hosting FTDI devices,<br>&gt; and clearly someone here knows about linux and serial a bit, I thought I&#39;d<br>

&gt; ask here as well.<br>&gt; <br>&gt; Really my biggest questions are:<br>&gt; Would the module even load if I compiled it incorrectly?<br>&gt; And if it would not load unless it was correct, and I did compile and load<br>